Messages in this thread | | | Date | Mon, 17 Oct 2016 17:13:56 -0700 | From | Subhash Jadavani <> | Subject | Re: [RESEND PATCH] scsi: ufs: fix race between clock gating and devfreq scaling work |
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On 2016-10-14 13:47, Martin K. Petersen wrote: >>>>>> "Subhash" == Subhash Jadavani <subhashj@codeaurora.org> writes: > > Subhash> UFS devfreq clock scaling work may require clocks to be ON if > Subhash> it need to execute some UFS commands hence it may request for > Subhash> clock hold before issuing the command. But if UFS clock gating > Subhash> work is already running in parallel, ungate work would end up > Subhash> waiting for the clock gating work to finish and as clock > gating > Subhash> work would also wait for the clock scaling work to finish, we > Subhash> would enter in deadlock state. Here is the call trace during > Subhash> this deadlock state: > > Somebody from the UFS camp, please review!
As there was no review so far, i have moved this patch as first patch in the new UFS bug fixes patch series ([PATCH v1 00/11] scsi: ufs: bug fixes patch series #1) sent by me today.
Thanks, Subhash
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